Rishi Sunak has promised to send hundreds of new long-range attack drones to Ukraine.
The UK Prime Minister met with Volodymyr Zelensky at Chequers on Monday (15.05.23) as the Ukrainian president made a surprise visit to Britain.
The politicians held "substantive negotiations" over military aid as Kyiv prepares for a major counter-offensive against Russian forces.
Sunak has confirmed that Britain will supply Ukraine with hundreds of air defence missiles and further unmanned aerial systems - including attack drones that have a range of over 125 miles.
The Prime Minister said: "This is a crucial moment in Ukraine's resistance to a terrible war of aggression they did not choose or provoke. They need the sustained support of the international community to defend against the barrage of unrelenting and indiscriminate attacks that have been their daily reality for over a year. We must not let them down."
Sunak compared Zelensky's leadership of Ukraine to Winston Churchill's heroic efforts as Prime Minister during the Second World War.
Addressing his ally, the Prime Minister said: "You are actually the first foreign leader I have had the privilege of welcoming here as Prime Minister and there's a lot of great history here.
"In fact this room that we are standing in, Winston Churchill made many of his famous speeches in World War Two from this room. And the same way today, your leadership, your country's bravery and fortitude are an inspiration to us all."